Roll for carding or garnett machines



Jan. 25; 1944.

J'. p. HOLLIN GSWORTH ROLL FOR CARDING OR GARNETT MACHINES y w A Filed Sept. 5, 19 .1

Patented Jan. 25, 1944 ,t. 2 340 221..

MACHINES; V H sworthri'ilfeenville s. Applicationfiepte'mber 5, 1941; Serial-N0. 409;731 its; i blaiiiif wl. 195112) f I I This invention relates to theifibre-ihandling sur... distantly spaced from the" axis or" the roll faces of the cylinders, dofiers, workers, strippers throughout the'length and circumference fofizthee licker-in', feed; fancy andxother rolls of carding roll, and which collectively constitute the. fibre-' or :garnett machines, for handling synthetic fibre contacting'surface 3 of the-r011. =Between "succutlinto staple lengths, such \asirayonfi nylonjf. 5 cessive teeth tips I, I circumferentiallyof thev etc.,-or natural;fibres;:such HSTWQOKJCOTCUDH etch roll, the teeth are provided :with.gulletsz8..which.= alone or in any desired mixtureithereofxe extend inwardly into the ribs 4. It is in these.

'PIiCr'tOithiS inventionc 'rtthasribeen difilcult :to. gullets that the fibres become matted which. cardtsynthetic;fibres:especially, duei-tor-thefibres. causes choking of thesurface 3 of the roll and having a tendency to iclingrto the-teeth .oftithe; prevents the tips I of the teethefromlproperlyvarious rolls. 5 This-caused :the. fibres to mat and; engaging-and working the fibres into a parallel choke the fibre-.handlingsurfaces:olizthe various; relationship toeachothern r rolls;,res'ultingin theyprod-uction eta-verymneven: In accordance with the :presentinventiongialfleece or .web as removedgfrom'the main-cylinder; ternate ribs 4' preferably are formed-withcon y thedoffers. A The above cond' ion made it extremely diffisurfaces H], which, as shown in Fig. 2, may be cult to mix the various kinds of fibres, due to one disposed on the same radius as the tips I of the clinging to a greater or lesser extent than anteeth of the ribs 4 or, as shown in Fig. 3, may other. be disposed on a radius slightly greater than One object of the present invention is to pro- 0 that of the tips I. Preferably, OWeVer, the G011- vide the fibre-handling rolls with fibre-contacttinuous surfaces In of the ribs 4 are formed on a ing surfaces which will materially reduce or enradius slightly less than that of the tips 1, as tirely eliminate the clinging of the fibres to the clearly shown in Fig. 4. teeth of the various rolls. Instead of having the plain-edge ribs in alter- Another object of the invention is to improve nating relation to the toothed-edge ribs in sucthe efiiciency of the fibre-handling surfaces so cessive groups axially of the roll, wherein each that the staple, or fibre, or mixtures of various group includes one plain-edge rib and one kinds thereof, are carded, combed, straightened, toothed-edge rib, the groups may be arranged and laid parallel, etc., in a greatly improved state. with unequal numbers of plain and toothed-edge In the accompanying drawing: ribs in'each group, for example, as shown in 15 tinuous, circumferentially-extending outer-.;e.dgez

Fig. 1 is a partial longitudinal sectional view Fig. 5, each group may include one toothed-edge through a roll clothed in accordance with the rib and two plain-edge ribs, with the plain-edge re ent invention; ribs disposed immediately adjacent each other. Fig. 2' is a transverse sectional elevation taken As shown in Fig. 6, each group may include one on the line 2-2, Fig. l; plainedge and two or more toothed-edge ribs, Figs. 3 and 4 are fragmentary views similar to with the toothed-edge ribs, in this instance, dis- Fig. 2 and showing variations in the clothing; posed immediately adjacent each other. Obvi- Figs. 5 and 6 are fragmentary views similar to ously, any suitable combination as to numbers Fig. 2, showing further variations in the clothand positioning of the ribs in each group may be i 40 provided in the handling of different kinds of Fig. 7 is a view similar to Fig. 1, showing a fibres, for example, longer fibres may require a variation in the arrangement for attaching the g eat r number 0f plain-edge ribs, whereas clothing to the roll. shorter fibres may require a greater number of As shown in Fig. 1, the roll I, which may be the toothed-edge ribs than there are plain-edge ribs. cylinder or any of the previously noted work- However, for general purposes, groups including ing rolls of a garnett or carding machine, comone plain-edge rib and one toothed-edge rib have prises a foundation cylinder 2 having a fibre-conin practice given very satisfactory results.

tacting surface 3. The fibre-contacting surface 3 As a matter of convenience, the clothing-is in is composed of circumferentially-extending ribs the form of a wire of a cross-section similar to 6 alternating with circiunferentially-extending 0 that shown in Fig. 1, and includes a substangrooves 5. tially rectangular base H having a fiat inner edge Normally, in a carding roll the outer or pesurface l2 adapted to bear against the outer ripheral edge 6 of each rib 4 is discontinuous, peripheral surface I3 of the foundation cylini. e., each rib is provided with a multiplicity of der 2. In that form of the invention shown in teeth arranged with the tips I of the teeth equi- Fig. 1, for example, the wire includes a blade portion I 4 having one side face continuous with a side face l5 of the base H, and which is disposed substantially at right angles to the flat edge 12 of the wire. The blade I4 is of relatively narrower width than the base II, with that end of the blade disposed adjacent the base ll inset with respect to the second longitudinal surface I6 of the base ll providing a longitudinal recess ll along the full length of the wire. As shown in Fig. 1, the blade tapers downwardly towards its outer edge 6, which outer edge preferably is disposed at right angles portion M of the wire, as clearly shown in Figs. 1 and 2.

If alternating plain and toothed-edge ribs are desired, the convolutions are formed with two wires or multiples of two in side by side relation to each other, for groups corresponding to Figs. 5 and 6, three wires or multiples of three with two of one kind and one of another in the proper relationship to each other are wound in successive convolutions on the face of the roll.

If desired, instead of the wire being surface- Wound on the roll, the roll may be provided to the side face I5 and parallel to the inner edge 7 The clothing wires, depending upon the grouping, are secured to the roll at one end thereof in side by side relation to each other with the shallow side l6 of the base of one wire'iri laterally abutting relation to the deep side face l5 of the next adjacent wire. wound in successive convolutions on the outer surface l3 of the roll 2 from end to end of the roll, and the second end of each wire is then secured to the roll in any suitable manner. in

this arrangement, the recesses ll of the respective wires constituting the grooves 5 in the fibreengaging surface of the roll. The flat side l5 of one wire and the outwardly tapering side It of the blade i l of the next adjacent wire forming the side walls of each groove, and the in- The wires are then with axially-spaced spiral grooves 20, in which the base ll of the wire may be laid and se cured, as clearly shown in Fig. 7.

I claim:

A roll having a fibre-contacting surface composed of alternately arranged circumferentially extending ribs and grooves formed by a series of wires of corresponding cross-sectional contours and each including a base of predetermined width seated on the roll and an upstanding blade of relatively narrower width projecting from said base, with the blade of one or more of the wires of the series provided with fibre engaging points formed in the outer edge thereof and the blade of each remaining wire oi the series having a substantially smooth outer edge devoid of said teeth, said series of wires being disposed on said roll in interwound spiral convolutions providing said surface with intermingled plain and toothed-edged ribs of equal widths separated by grooves of equal relatively greater widths throughout said surface.

JOHN D. HOLLINGSWORTH. 

